* [PATCH] utils: Clean trailing whitespace at end of SHELL
@ 2014-09-04 14:27 Eric Bavier
2014-09-04 19:31 ` Ludovic Courtès
0 siblings, 1 reply; 4+ messages in thread
From: Eric Bavier @ 2014-09-04 14:27 UTC (permalink / raw)
To: guix-devel
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I found an unfortunate bug in the last patch I made to
patch-makefile-SHELL that would leave a trailing ' ' at the end of SHELL
assignments. This is fine for most packages, but caused
gobject-introspection to fail building for me just now (for the curious:
it effectively does an "(apply system* (string-split (string-append SHELL
" " "./libtool") #\space))" which causes sh to try to execute "")
The attached patch to core-updates should remedy the problem.
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From c2467a4504737c13435304b1e5c7eb7e4ebf7b70 Mon Sep 17 00:00:00 2001
From: Eric Bavier <bavier@member.fsf.org>
Date: Thu, 4 Sep 2014 09:19:24 -0500
Subject: [PATCH] utils: Clean trailing whitespace at end of SHELL
* guix/build/utils.scm (patch-makefile-SHELL): Remove trailing whitespace.
---
guix/build/utils.scm | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/guix/build/utils.scm b/guix/build/utils.scm
index f38b2ca..d6365c0 100644
--- a/guix/build/utils.scm
+++ b/guix/build/utils.scm
@@ -590,7 +590,7 @@ When KEEP-MTIME? is true, the atime/mtime of FILE are kept unchanged."
(format (current-error-port)
"patch-makefile-SHELL: ~a: changing `SHELL' from `~a' to `~a'~%"
file old new))
- (string-append "SHELL = " new " " args))))
+ (string-append "SHELL = " new (if (string=? args "\n") "" " ") args))))
(when keep-mtime?
(set-file-time file st))))
--
1.7.9.5
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--
Eric Bavier
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] utils: Clean trailing whitespace at end of SHELL
2014-09-04 14:27 [PATCH] utils: Clean trailing whitespace at end of SHELL Eric Bavier
@ 2014-09-04 19:31 ` Ludovic Courtès
2014-09-05 5:05 ` Eric Bavier
0 siblings, 1 reply; 4+ messages in thread
From: Ludovic Courtès @ 2014-09-04 19:31 UTC (permalink / raw)
To: Eric Bavier; +Cc: guix-devel
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Eric Bavier <ericbavier@gmail.com> skribis:
> I found an unfortunate bug in the last patch I made to
> patch-makefile-SHELL that would leave a trailing ' ' at the end of SHELL
> assignments. This is fine for most packages, but caused
> gobject-introspection to fail building for me just now (for the curious:
> it effectively does an "(apply system* (string-split (string-append SHELL
> " " "./libtool") #\space))" which causes sh to try to execute "")
AFAIK trailing whitespace in assignments is ignored by ‘make’.
I grepped gobject-introspection out of curiosity and couldn’t find any
suspicious SHELL assignment. Do you still have it around?
> --- a/guix/build/utils.scm
> +++ b/guix/build/utils.scm
> @@ -590,7 +590,7 @@ When KEEP-MTIME? is true, the atime/mtime of FILE are kept unchanged."
> (format (current-error-port)
> "patch-makefile-SHELL: ~a: changing `SHELL' from `~a' to `~a'~%"
> file old new))
> - (string-append "SHELL = " new " " args))))
> + (string-append "SHELL = " new (if (string=? args "\n") "" " ") args))))
The (string=? args "\n") seems specific and non-obvious.
Wouldn’t this work better:
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diff --git a/guix/build/utils.scm b/guix/build/utils.scm
index f38b2ca..057dcd2 100644
--- a/guix/build/utils.scm
+++ b/guix/build/utils.scm
@@ -582,7 +582,7 @@ When KEEP-MTIME? is true, the atime/mtime of FILE are kept unchanged."
(let ((st (stat file)))
(substitute* file
- (("^ *SHELL[[:blank:]]*=[[:blank:]]*([[:graph:]]*/)([[:graph:]]+)[[:blank:]]*(.*)$"
+ (("^ *SHELL[[:blank:]]*=[[:blank:]]*([[:graph:]]*/)([[:graph:]]+)(.*)$"
_ dir shell args)
(let* ((old (string-append dir shell))
(new (or (find-shell shell) old)))
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Thanks,
Ludo’.
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] utils: Clean trailing whitespace at end of SHELL
2014-09-04 19:31 ` Ludovic Courtès
@ 2014-09-05 5:05 ` Eric Bavier
2014-09-05 8:11 ` Ludovic Courtès
0 siblings, 1 reply; 4+ messages in thread
From: Eric Bavier @ 2014-09-05 5:05 UTC (permalink / raw)
To: Ludovic Courtès; +Cc: guix-devel
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Ludovic Courtès writes:
> Eric Bavier <ericbavier@gmail.com> skribis:
>
>> I found an unfortunate bug in the last patch I made to
>> patch-makefile-SHELL that would leave a trailing ' ' at the end of SHELL
>> assignments. This is fine for most packages, but caused
>> gobject-introspection to fail building for me just now (for the curious:
>> it effectively does an "(apply system* (string-split (string-append SHELL
>> " " "./libtool") #\space))" which causes sh to try to execute "")
>
> AFAIK trailing whitespace in assignments is ignored by ‘make’.
>
> I grepped gobject-introspection out of curiosity and couldn’t find any
> suspicious SHELL assignment. Do you still have it around?
E.g. gobject-introspection-1.38.0/giscanner/utils.py:124
> The (string=? args "\n") seems specific and non-obvious.
I thought so too. Your suggestion does work. With this patch, I was
able to bootstrap and build gobject-introspection.
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From 11459384968f654c42ad7dba4443dada35191f5b Mon Sep 17 00:00:00 2001
From: Eric Bavier <bavier@member.fsf.org>
Date: Thu, 4 Sep 2014 09:19:24 -0500
Subject: [PATCH] utils: Clean trailing whitespace at end of SHELL
* guix/build/utils.scm (patch-makefile-SHELL): Remove trailing whitespace.
---
guix/build/utils.scm | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/guix/build/utils.scm b/guix/build/utils.scm
index f38b2ca..d169053 100644
--- a/guix/build/utils.scm
+++ b/guix/build/utils.scm
@@ -582,7 +582,7 @@ When KEEP-MTIME? is true, the atime/mtime of FILE are kept unchanged."
(let ((st (stat file)))
(substitute* file
- (("^ *SHELL[[:blank:]]*=[[:blank:]]*([[:graph:]]*/)([[:graph:]]+)[[:blank:]]*(.*)$"
+ (("^ *SHELL[[:blank:]]*=[[:blank:]]*([[:graph:]]*/)([[:graph:]]+)(.*)$"
_ dir shell args)
(let* ((old (string-append dir shell))
(new (or (find-shell shell) old)))
@@ -590,7 +590,7 @@ When KEEP-MTIME? is true, the atime/mtime of FILE are kept unchanged."
(format (current-error-port)
"patch-makefile-SHELL: ~a: changing `SHELL' from `~a' to `~a'~%"
file old new))
- (string-append "SHELL = " new " " args))))
+ (string-append "SHELL = " new args))))
(when keep-mtime?
(set-file-time file st))))
--
1.7.9.5
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--
Eric Bavier
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] utils: Clean trailing whitespace at end of SHELL
2014-09-05 5:05 ` Eric Bavier
@ 2014-09-05 8:11 ` Ludovic Courtès
0 siblings, 0 replies; 4+ messages in thread
From: Ludovic Courtès @ 2014-09-05 8:11 UTC (permalink / raw)
To: Eric Bavier; +Cc: guix-devel
Eric Bavier <ericbavier@gmail.com> skribis:
> Ludovic Courtès writes:
>
>> Eric Bavier <ericbavier@gmail.com> skribis:
>>
>>> I found an unfortunate bug in the last patch I made to
>>> patch-makefile-SHELL that would leave a trailing ' ' at the end of SHELL
>>> assignments. This is fine for most packages, but caused
>>> gobject-introspection to fail building for me just now (for the curious:
>>> it effectively does an "(apply system* (string-split (string-append SHELL
>>> " " "./libtool") #\space))" which causes sh to try to execute "")
>>
>> AFAIK trailing whitespace in assignments is ignored by ‘make’.
>>
>> I grepped gobject-introspection out of curiosity and couldn’t find any
>> suspicious SHELL assignment. Do you still have it around?
>
> E.g. gobject-introspection-1.38.0/giscanner/utils.py:124
Oh, I see.
>> The (string=? args "\n") seems specific and non-obvious.
>
> I thought so too. Your suggestion does work. With this patch, I was
> able to bootstrap and build gobject-introspection.
>
>
> From 11459384968f654c42ad7dba4443dada35191f5b Mon Sep 17 00:00:00 2001
> From: Eric Bavier <bavier@member.fsf.org>
> Date: Thu, 4 Sep 2014 09:19:24 -0500
> Subject: [PATCH] utils: Clean trailing whitespace at end of SHELL
>
> * guix/build/utils.scm (patch-makefile-SHELL): Remove trailing whitespace.
OK to commit!
Thanks,
Ludo’.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2014-09-04 14:27 [PATCH] utils: Clean trailing whitespace at end of SHELL Eric Bavier
2014-09-04 19:31 ` Ludovic Courtès
2014-09-05 5:05 ` Eric Bavier
2014-09-05 8:11 ` Ludovic Courtès
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